CA2005640A1 - Improved phosphorus-containing polymer compositions containing water - soluble polyvalent metal compounds - Google Patents
Improved phosphorus-containing polymer compositions containing water - soluble polyvalent metal compoundsInfo
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- CA2005640A1 CA2005640A1 CA002005640A CA2005640A CA2005640A1 CA 2005640 A1 CA2005640 A1 CA 2005640A1 CA 002005640 A CA002005640 A CA 002005640A CA 2005640 A CA2005640 A CA 2005640A CA 2005640 A1 CA2005640 A1 CA 2005640A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/02—Homopolymers or copolymers of monomers containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Paints Or Removers (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Biological Depolymerization Polymers (AREA)
- Removal Of Specific Substances (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Polyethers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Polymer compositions comprising a) one or more polymer(s) containing pendant and/or terminal phosphorus groups and b) one or more water-soluble polyvalent metal compounds(s) functioning as a crosslinking agent are useful in coatings to give improved solvent resistance, chemical resistance, print resistance, corrosion resistance and adhesion to metal.
Polymer compositions comprising a) one or more polymer(s) containing pendant and/or terminal phosphorus groups and b) one or more water-soluble polyvalent metal compounds(s) functioning as a crosslinking agent are useful in coatings to give improved solvent resistance, chemical resistance, print resistance, corrosion resistance and adhesion to metal.
Description
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BACKGROUND OF THE INVE~ION
Air-dried coatings based on aqueous polymeric emulsions are widely used in industrial applications. It is known that the properties of these polymers can be modified by bonding metals to the polymer molecules. Bonding the metal to the polymer is typically attained by the formation of ionic bonds. In ionic bonding, the metals are usually bonded to an ionic group in the pclymer such as a carboxylic acid group. The ionically bonded polymers, however tend to lose their structural stability in polar solvents, such as water or alcohol, and at high temperatures. Thus, polymeric coatings -and adhesives which are crosslinked through ionic bonding are subject to attack and deterioration by chemical solvents, moisture and by thermal degradation.
Polymeric compositions which are ionically crosslinked are disclosed in U.S.
Patent Nos. 3,740,366; 3,322,734; and 2,754,280. The ~366 patent teaches pressure sensitive adhesives ionically crosslinked by a polyvalent metal and free carboxylic acid groups. The '734 patent teaches ionically crosslinked copolymers containing ionized carboxyls or ionized sulfonyis and metal ions as an ionic linking agent. The '280 patent disclosed emulsions of ionicaliy cross-linked resins wherein pairs of carboxyl groups in -~
the molecular chains are crosslinked by atoms of polyvalent metals.
The prior art compositions based on carboxyl/polyvalent metal cross-linking have disadvantages in many properties such as solvent resistance, print resistance, block resistance, storage stability and adhesion. Anempts have been made to improve the , , :
, , , ~ .
, 2~i~S6~) properties of polymeric coating and adhesive compositions by incorporating therein phosphorous-containing polymers.
British Patent Specification No. 958,856 discloses copolymers suitable for use in coating compositions which are derived from 1) esters of acrylic or methacrylic acid;
2) a methylol compound; and 3) a mixed ester of a diol esterified with (meth)acrylic acid and an organic or inorganic acid (such as phosphoric acid).
U.S. Patent No. 3,449,303 discloses polymers of phosphate esters derived from allyloxy and allyloxyalkoxy phosphates and having improved dyeability.
U.S. Patent No. 4,110,285 discloses a process for preparing a stable aqueous emulsion of addition polymers using a mixture of phosphate esters as an emulsionstabilizer during the polymerization process.
European patent publication no. 0221498 discloses anticorrosive copolymer emulsion prepared from ethylenically unsaturated monomers and a polymerizable surface-active alkylphosphate monomer.
U.S. Patent NO. 4,477,623 disclosed an improved paint composiRon comprising;
1) a water-insoluble addition polymer prepared from styrenes, acrylates, methacrylates, vinyl esters and vinyl chloride (including at least one monomer containing a phosphoric, sulphonic or carboxylic acid group 2)anionic or non-ionic emulsifier, 3) polyoxyethylene-chain-containing compound and 4) alkali-soluble addition polymer.
U.S. Patent No. 4,506,057 discloses a modified latex composition comprising at least one ethylenically unsaturated monomer and a compound having a - PO(O)2 group which is bound ~o the surface of the latex. These compositions may contain various water-insoluble inorganic fillers such as zinc oxide.
Japanese patent disclosure no. 61-143411 discloses an acrylic coating material consisting of a copolymer of 90-99.9 wt.% of copolymerizable monomer and 0.1-10 wt.% of phosphoric acid ester.
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U.S. Patent No. 4,~58,003 discloses polymeric compositions comprising the reaction product of 0.5-100% of a (hydroxyl)-phosphinyl-alkyl acrylate or methacrylate and 0-99.5% of a methacrylate and 0-99.5% of a polymerizable 1,2-ethylencially unsaturated compound.
The present invention is an improvement over the prior art compositions of carboxyl or phosphorus-containing polymers. The improvement lies in the combination of one or more polymer(s) containing phosphorus groups and a crosslinking agent comprising one or more water-soluble polyvalent metal compounds. It is an object of 0 this invention to provide coating and adhesive compositions which have improved solvent, chemical, print and corrosion resistance and adhesion to metal. It is a further object of this invention to provide improved phosphorus-containing polymer compositions which contain water-soluble polyvalent metal crosslinking agents instead of water-insoluble metal crosslinkers. It is an even further object of this invention to provide novel polymeric compositions which are curable at ambient temperatures.
Further, it is an object of the present invention to provide film-forming polymeric compositions which are stable as a one-container system without the necessity of pre-mixing of ingredients immediately prior to use.
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, .
SUMMARY QF TI~E II~JVENTION
This invention relates to improved polymer compositions comprising in combination a) one or more polymer(s) containing pendant and/or terminal phosphorus groups(s) and b) one or more water-soluble polyvalent metal compounds(s) functioning as a crosslinking agent. The compositions may additionally contain a volatile chelating agent, such as, for example, volatile ammonia, amines, beta-ketoesters, bela-diketones and acetyl acetone. Preferred polyvalent metal compounds include the acetates benzoates, nitrates and carbonates of Co2+, Zn2+, Ni2+ and Zr2+. The compositions of the present invention are useful in a variety of coatings and adhesives applications and result in improved solvent resistance, chemical resistance, print resistance, corrosion resistance and adhesion to metal surfaces.
D~TAILED ~S~IPTION
The present invention involves novel polymeric compositions which find utility as ambient-curable coatings and adhesives haYing improved solvent resistance, chemical resistance, print resistance, corrosion resistance and adhesion to metal surfaces. This invention specifically relates to polymeric compositions comprising in combination a) one or more polymer(s) containing pendant or terminal (or both) phosphorus group(s) and b) one or more water-soluble polyvalent metal compound(s) functioning as a crosslinking agent.
The polymers which are useful in this invention include homopolymers and copolymers of: (1) vinyl esters of an aliphatic acid having 1 to 18 carbon atoms, such as vinyl acetate; (2) acrylic acid esters and methacrylic acid esters of an alcohol having 1 to 18 carbon atoms, such as for example methyl acrylate, ethyl acrylate, butylacrylate, 2-ethyl hexyl acrylate, methyl methacrylate, ethyl methacrylate and butyl methacrylate; and (3) mono-and di-ethylencially unsaturated hydrocarbons, such as ethylene, isobutylene, styrene, aliphatic dienes (such as butadiene, isoprene, and chloroprene) and the like. The polymers preferably include copolymers of acrylic or ~0~1~69L~
methacryiic acid esters with one or more of the following monomers: vinyl chloride, vinylidene chloride, styrene, vinyltoluene, acrylonitrile, an~ methacrylonitrile.
Suitable polymers also include copolymers of one or more of ~he above hydrocarbons with one or more nitriles or amides of acrylic acid, methacrylic acid or vinyl esters.
The polymers may be used as emulsions, suspensions, or solutions of the polymers in water or organic solvents, preferably as aqueous emulsions. The polymer par~icles can be single-stage or multi-stage. The present invention is especially suitable for use in acrylic latex type compositions such as described in U.S. Patent Nos. 4,129,448;4,102,843; 3,740,366, and 3,736,286, the disclosures of which are herein incorporated by reference. Preferably, the polymers for use in this invention are thermoplastic and have a glass transition temperature from about -50C to about 100C, more preferably 20-60C. A suitable concentration of total polymers present in the compositions of this invention ranges from about 30% to about 99% by weight based on the total dry weight of the composition. The concentration of polymers which contain no phosphorus groups can range from about 50% to about 98% by weight based on the total weight of polymers in the composition.
It is critical to the practice of this invention that at least one of the polymers contain pendant and/or terminal phosphorus groups. Suitable phosphorus-group-containing polymers would inciude the polymers mentioned above which have a molecular weight (measured by gel permeation chromatography) of about 400 or greater and at least two phosphorus groups per molecule. The phosphorus groups can be phosphale, phosphonate or phosphinate. Preferably the phosphorus-group-containing polymer is an acrylic polymer or copolymer having a molecular weight of about 500,000 or greater and from about 4 to about 5 phosphorus groups per molecule. The phosphorus-group-containing polymers can be prepared by reacting the basic polymer and/or corresponding polymerizable monomers with sultable monomers containing phosphate, phosphonate or phosphinate functionality following conventional polymerization processes such as disclosed in U.S. Patent No. 4,658,003, herein incorporated by reference.
~0~)56~10 Phosphorus-containing monomers and the preparation thereof are described in U.S. Patent No. 3,355,364, the disclosure of which is herein incorporated by reference.
The prelFerred monomers for preparing the phosphorus-group-containing polymer are phosphoethylmethacrylate, phospho-di(ethyl methacrylate), and allyl phosphate represented by the formula 1, ll and lll, respectively.
l l 11 H2C=C-C-O-C-C-O-P-OH (I) Il I I I
O H H OH
I I 11 (II) H2C=C-C-O-C-C-O-P-OH
Il I I
O H H
H H O
l l ll H2c=c-C-o-P-OH (III) l l H OH
' ;~)056~L(1 .
A suitable level of phosphorus-group-containing polymers for use in the compositions of this invention is from about 2% to about 50% by weight based on the total weight of polymer in the composition. Preferably the phosphorus groups have the formula.
-Z-P-OR1, where Rland R2 independently are H or (C1.C12) alkyl or aryl and Z is -0-or -~-. 5 It is also critical to the practice of this invention that the polymeric compositions contain one or more water-soluble polyvalent metal compounds functioning as crosslinking agents. Suitable polyvalent metals include those such as elements 21 through 30 of the Periodic Table of the ~lements. The preferred polyvalent metal compounds include the metal acetates, benzoates, nitrates, carbonates and the like, although any water-soluble polyvalent metal compound would be suitable for use in this invention. A suitable level of polyvalent metal for this invention ranges from about 1:4 to about 2:1 polyvalent metal to phosphorus-groups. Preferably the molecular ratio of polyvalent metal to phosphorus-groups ranges from about 1:2 to about 2:1.
The compositions of this invention may also include a volatile chelating agent which functions to block the polyvalent metal while in solution. This preYents premature crosslinking of the metal with the polymer-bound phosphorus-groups until the volatile chelating agent has evaporated. Thus, the invention produces coatings and adhesives compositions which exhibits long-term storage stability in a one container ;~0~3S6~(~
system, and which are curable at ambient temperature by air drying. Suitable, volatile chelating agents include, for example, ammonia; amines, such as morpholine, monoethanolamine, diethylamino ethanol, triethylamine and triethanol amine; B-diketones; and B-ketoesters. The ~-diketones are represented by the formula:
O O
Il 11 Y-C-CHR-C-Y', where R is -H, lower alkyl or aryl; and Y and Y' independently are aryl or -CXX~B where X and X' independently are -H or halogen and B is -H, halogen or lower alkyl. Suitable 13-diketones include, for example, 2,4-pentanedione, 2,4-hexanedione, 2,4-heptanedione, 5-methyl-2, 4-hexanedione, 5,5-dimethyl-2, 4-hexanedione, 3-methyl-2, 4-pentanedione, 1,1,1-trifluoro-2, 4-pentanedione, 3-benzyl, 2,4-pentanedione and the like. The B-ketoesters can be represented by the formula:
O O
Il 11 Y-C-CHR-C-O-Y', where Y, Y' and R are as defined above.
Suitable B-ketoesters include, for example, methyl acetoacetate, ethylacetoacetate, alpha-methyl-ethyl acetoacetate, alpha-n-butyl ethyl acetoacetate, alpha-secbutyl alpha-ethylethyl acetoacetate and the like. The volatile chelating agents are used at a level of at least 2 moles of chelating agent per mole of meta~, preferably at a molar excess of chelating agent to metal.
The compositions of this invention preferably contain a solvent which comprises from about 40% to about 80% by weight of the to~al composition. Suitable solvents include water and organic solvents such as alcohols, glycol ethers, aromatics, ketones, acetates. These include, for exarnple, methanol, ethanol, toluene, xylene, acetone, methyl ethyl ketone, butyl acetate and the like.
.
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Most preferably the compositions of this invention are aqueous emulsions.
The compositions optionally may include other traditional additives for coatingsand adhesives, such as thickeners, pigments, stabilizers and the like, provided tha~ these do not interfere with the crosslinking of the polyvalent metal with the phosphorus groups. The amount of these optional additives can be determined by methods known in the art, but are preferably less than 70% by weight of the total solids content of the compositions.
The compositions are prepared by blending the ingredients to obtain a homogeneous mixture. The polyvalent metal is preferably added as an aqueous solution with a pH of about 9-10. The phosphorus-group-containing polymer(s) can be cold blended into the compositions without the necessity of grafting these polymers onto the other polymers in the composition. It is believed that the cured composition forms an interpenetrating polymer network resulting from polyvalent metal and phosphorus group crosslinking and chain entanglement. The compositions can be applied to a substrate by a variety of techniques such as brushing, spraying, dipping or rolling.
They can be air-dried and cured at ambient temperatures from about 5C or higher to obtain films with dramatically improved performance properties. The compositions of this invention are useful in a variety of applications such as paints, coatin~s, adhesives, caulks and mastics.
The following examples are presented to demonstrate this invention. The examples are intended to be illustrative and not limitative. All parts and percentages are by weight unless otherwise indicated.
~MPLE I
A phosphorus-group-containing polymer within the scope of this invention was prepared by the following procedure:
A 3 liter, 4-necked, round-bottom flask with a blade stirrer, condenser, nitrogen inlet, thermometer and inlets for adding monomer emulsion and initiatorsolution was charged with 690g. deionized water and 3.39. soap (Siponate DS-4; 23%
active). This solution was heated to 80C under a flow of nitrogen.
' g 2~ 40 A monomer emulsion was prepared by adding 577.2g. butyl acrylate and 490.6g.
methyl methacrylate to a solution of 16.4g. soap (Siponate DS-4) in 603g. of deionized water. A portion (101g.) of the monomer emulsion was reserved to make a preform seed and 42.2g. of phosphoethyl methacrylate (Kayamer PM-1 available from Nippon Kayaku Co., Ltd.) was added to the remainder of the monomer emulsion.
The 101g. of reserved monomer emulsion above was added to the reaction flask, followed by a solution of 3.12g. ammonium persulfate dissolved in 239. deionized water.
The reaction mixture was allowed to polymerize for 5 minutes and the temperature was maintained at 80C . The remaining portion of the monomer emulsion and an initiator solution of 0.56g. ammonium persulfate in 60g. deionized water were added separately and uniformly over 180 minutes while maintaining a reaction temperature of 80C. At the conclusion of the feeds of monomer emulsion and initiator solution, the reaction was maintained at 80C for 30 minutes and then cooled to 55C. The reaction was finished-off by adding 11.1g. of an 0.15% aqueous solution of FeSO4-7H2O, 0.32g. t-butyl hydroperoxide in 19g. deionized water and 0.14g. sodium sulfoxylate formaldehyde in 19g. deionized water and maintaining temperature of 80C for 20 minutes. The final product was cooled and filtered through a 100 mesh screPn.
The resulting phosphorus-group-containing latex had a composition by weight of 52% butyl acrylate, 44.2% methyl methacrylate and 3.8% phosphoethyl methacrylate.
This latex had a total solids of 42.2%, viscosity of 16 centipoise and particle size of 155 nanometers.
E~mple ll A phosphorus-containing polymer within the scope of this invention was prepared by the following procedure:
A 3-liter, 4-necked, round-bottom flask with a stirrer, condenser, nitrogen inlet, thermometer and inlets for adding monomer emulsion and initiator/buffer solution was charged with 918g. deioni~ed water and 12.0g of soap (Alipal C0-436, 58% active).
This solution was heated to ~0C under a flow of nitrogen.
2~05640 A monomer emulsion was prepared by adding 516.49. of butyi acrylate, 473.19.
of methyl methacrylate, 26.49. of methacrylic acid and 40.19. of phosphoethyl methacrylate to a solution of 6.~g. of soap in 264g. of deionized water.
A portion (90.5g.) of the monomer emulsion was added to the reaction flask followed by a solution of 2.19. ammonium persulfate dissolved in 37.79. delonized water.
The reaction mix~ure was allowed to polymerize for about 20 to 30 minutes. Then the remaining portion of the monomer emulsion and an initiator/buffer solution of 0.759. of a~monium persulfate dissolved in 256g. of deionized water containing 6.8g. of ammonia (28%) were added separately and uniformly over 150 minutes while maintaining a reaction temperature of 80C. At the conclusion of the feed of the monomer emulsion and initiator/buffer solution the reaction was maintained at 80C for an addi~ional 3 minutes and then cooled to 70C.
The reaction was finished-off by adding 10.69. of an 0.15% aqueous solution of FeSO471~20, 1.5g. t-butyl hydroperoxide (70%) in 37.79. of deionized water and 1.06g. of sodium sulfoxylate formaldehyde in 37.79. of deionized water and maintaining a temperature of 70C for 30 minutes.
The final product was cooled and filtered through a 100 mesh screen. The resulting phosphorus-group-containing latex had a composition by weight of 48.9%
butyl acrylate, 44.8% methyl methacrylate, 2.5% methacrylic acid and 3.8%
phosphoethyl methacrylate. The latex had a total solids of 39.8%, viscosity of 18 centipoise and average particle size of 106 monomet~rs.
~a~1~ lll A phosphorus containing polymer within the scope of this invention was prepared following the procedures of Ex. Il, except that the monomers and amounts thereof were altered to give a polymer having the composition by weight of 47.8/~, butyl acrylate, 43.6% methyl methacrylate and 8.6% phosphoethyl methacrylate. The resulting latex had a total solids of 39.6%, viscosity of 32 centipoise and average particle size of 104 3 o nanometers.
, ~)56~() xample IV
A phosphorus-containing polymer within ~he scope of this invention was prepared by the foilowing procedure:
A 5-liter, 4-necked, round-bottom flask with a stirrer, condenser, nitrogen inlet, thermometer and inlets for adding monomer emulsion and initiator solution was charged with 16309. deionized water and 18.49. of soap.
A monomer emulsion was prepared by adding 710.5g. of 2-ethylhexyl acrylate, 463.9g. of styrene, 450g. of acrylonittile, 92.39. of methacrylic acid and 61.7g. of phosphoethyl methacrylate to a solution of 57.5g. of soap in 380g. of deionlzed water.
A portion (100g.) of the monomer emulsion was added to the reaction flask followed by a solution of 3.609. ammonium persulfate dissolved in 45g. deionized water.
The flow of nitrogen was stopped and the reaction mixture was allowed to polymerize for 20 minutes. A solution of 3.6g. of sodium carbonate dissolved in 45g. of deionized water was added to the flask. Then the remaining portion of the monomer emulsion and an intitiator solution of O.90g. of amrnonium persulfate dissolved in 120g. of deionized water containing 3.1g. of soap were added separately and uniformly over 180 minutes while maintaining a reaction temperature of 80C. At the conclusion of the feed of the monomer emulsion and initiator solution, the monomer emulsion was rinsed into the flask with 409. of deionized water and reaction was maintained at 80C for an additional 30 minutes and then cooled tG 70C.
The reaction was finished-off by adding 18.0g. of an 0.15% aqueous solution of FeSO47H20, 2.6g. t-butyl hydroperoxide (70%) ("t-BHP") in 15g. bf deionized water and 1.8g. of sodium sulfoxylate formaldehyde in 25g. of deionized water. After 15 minutes at about 70C, another charge of the t-BHP soiution and sodium sulfoxylate formaldehyde solution was added. After another 15 minutes, 21.~g. of styrene monomer was added to the kettle and a third charge of a t-BHP solution and sodium sulfoxylate formaldehyde solution was added. The reaction temperature was maintained at about 70C for another 15 minutes.
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The reaction was then cooled to below 40C and neutralized with ammonia (28%).
The final product was cooled and filtered through a 100 mesh screen. The resulting polymer had a composition by weight of 39.47% ethylhexyl acrylate, 26.97% styrene, 25.0% acrylonitrile, 5.13% methacrylic acid and 3.43% phosphoethyl methacrylate.The resulting latex had a total solids of 41.7%, average particle size of 105 nanometers and viscosity of 1668 centipoise.
A phosphorus-containing polymer within the scope of this invention was prepared following the procedures of Ex. Il, except that the monomers and amounts thereof were altered to give a polymer having a composition by weight of 48.4% butyl acrylate, 4~.4% methyl methacrylate, 1.~% methacrylic acid and 5.7% phosphoethylmethacrylate. The resulting latex had a total solids of 40.0%, viscosity of 20 centipoise and average particle size of 113 nanometers.
~mple V! rcQmparative) An acrylic polymer containing no phosphorus groups was prepared following the procedures of Example ll. The monomers and amounts thereof were altered to give a polymer having a final composition by weight of 49.8% of butyl acrylate, 45.7% methyl methacrylate, and 4.5% methacrylic acid. The resulting latex had a total solids of 40.7%, viscosity of 26 centipoise and average particle size of 102 nanometers.
The phosphorus-~roup-containing polymer composition of Example lll was mixed with a zinc ammonium carbonate solution to give a mixture containing 0.67% zinc based on total weighl of the polymer compositions (1.9% Zn based on solid weight of polymer. This mixture was then evaluated for properties of film formation, storage stability, solv~nt and chemical resistance and print resistance. Film formation was tested by casting said composition on Bonderite~ 1000 steel panels to give a dry film thickness of about 1.2 mils.
~o~s~
The panels were dried at 150F for 30 minutes and allowed to stand at room temparature for 7 days. The films were visually examined for continuous film formation and appearance.
Solvent resistance was measured following standard ASTM test method and using dimethylformamide solvent. Poor solvent resistance is indicated by a sample which dissolves or has a relatively high swell ratio. Print and block resistance were measured using standard test ptocedures and rated on a scale of 0 to 5, with 0=good and 5=poor.
Methy ethyl ketone solvent rub resistance was measured following standard test procedures and rated according to the number of rubs before the polymer film is visibly affected by the solvent.
Chemical salt resistance was measured by subjecting the panels to a salt spray for 72 hours. The films were visually examined and rated (10=good, 0-poor).
Storage stability was measured by allowing samples of the zinc-containing polymeric mixture to stand at 140F for 10 days. The sample were then physicallyexamined and measured for viscosity. The samples were rated as FAIL if there were any gel formation and greater than ten-fold increase in viscosity.
Example VIU (comparative) The polymer composition prepared in Ex. I was tested for film formation, storagestability, solvent and chemical resistance and print resistance following the procedures of Ex. Vll, except that no zinc ammonium carbonate was added to the composition. The results of these tests are presented in Table I (infra).
~
The polymer composition prepared in Ex. Vl was tested as in Ex. Vll, except thatno zinc ammonium carbonate was added to the composition. The results are presented in Table I (infra).
,~
, ' , , .
~s~o :
TABLE I
Sampl~: Ex.VII _ Ex. Vlll Ex.lX
(comparative) (comparative) Test:
Film Formation yes yes yes Stability pass pass pass Solvent Resistance (swell ra~io) 3.9 dissolveddissolved Solvent Resistance ~200 30 15 (MEK rubs) Print Resistance 2 4 5 Block Resistance 1 5 5 Salt spray 9.5 4.5 3 The above results demonstrate that the composition of this invention(Ex. Vll) has improved solvent resistance, print resistance, block resistance and chemical resistance while maintaining good film formation and storage stability.
;
2005~
E~ample X
The polymer composition prepared in Ex. I was mixed with insoluble, solid zinc oxide pigment at a weight ratio of polymer composition to zinc oxide of 60:40. The mixture was evaluated for film formation following the procedure of Ex. Vll. No film formed from the mixture and only a dry powder resulted. The composition was alsotested for storage stability and rated as FAIL because complete gelation occurred.
Example Xl The polymer composition prepared in Ex. Vl was mixed with a zinc ammonium carbonate solution to give a mixture containing 0.67% zinc (1.9% Zn based on solid wt.
of polymer). The composition was tested for storage stability as in Ex. Vll and was rated as FAIL. The composition was also tested for solvent resistance as in Ex. Vll and completely dissolved in dimethylformamide.
Example ~11 The polymer composition prepared in Ex. V was mixed respectively with a variety of water-soluble, polyvalent metal solutions to form compositions within the scope of this invention. A control sample was also prepared containing none of the metal solutions. The samples were formulated according to the fol!owing recipe:
Sample: (~rams~ _ A _ ~ C D(controll Ingredients:
Polymer composition (40% solids) 62.5 62.5 62.5 62.5 Zn CO3~4NH3 (8.2% Zn) 5.82 ZrCO3~4NH3 (17%Zr) - 3.91 NiC:O3 (81.2% solids) - - i.07 NH40H (14%) 1.5 2.5 3.9 2.5 bu~ylcarbitol~ 5.0 5.0 5.0 5.0 Thickener 2.5 1.0 1.0 1.0 ~diethylene glycol monobutyl eIher 2~C~56~
These samples were tested for solvent resistance as in Ex. Vll. The results are presenteci below:
Sample: _ A B C D
MEK rubs ~200 >200 >20015 Sweli Ratio:
~tetrahydrofuran) 5 . 4 4 .14.9 gelled (dimethyl formamide) 4.5 2.7 4.1 dissolved
BACKGROUND OF THE INVE~ION
Air-dried coatings based on aqueous polymeric emulsions are widely used in industrial applications. It is known that the properties of these polymers can be modified by bonding metals to the polymer molecules. Bonding the metal to the polymer is typically attained by the formation of ionic bonds. In ionic bonding, the metals are usually bonded to an ionic group in the pclymer such as a carboxylic acid group. The ionically bonded polymers, however tend to lose their structural stability in polar solvents, such as water or alcohol, and at high temperatures. Thus, polymeric coatings -and adhesives which are crosslinked through ionic bonding are subject to attack and deterioration by chemical solvents, moisture and by thermal degradation.
Polymeric compositions which are ionically crosslinked are disclosed in U.S.
Patent Nos. 3,740,366; 3,322,734; and 2,754,280. The ~366 patent teaches pressure sensitive adhesives ionically crosslinked by a polyvalent metal and free carboxylic acid groups. The '734 patent teaches ionically crosslinked copolymers containing ionized carboxyls or ionized sulfonyis and metal ions as an ionic linking agent. The '280 patent disclosed emulsions of ionicaliy cross-linked resins wherein pairs of carboxyl groups in -~
the molecular chains are crosslinked by atoms of polyvalent metals.
The prior art compositions based on carboxyl/polyvalent metal cross-linking have disadvantages in many properties such as solvent resistance, print resistance, block resistance, storage stability and adhesion. Anempts have been made to improve the , , :
, , , ~ .
, 2~i~S6~) properties of polymeric coating and adhesive compositions by incorporating therein phosphorous-containing polymers.
British Patent Specification No. 958,856 discloses copolymers suitable for use in coating compositions which are derived from 1) esters of acrylic or methacrylic acid;
2) a methylol compound; and 3) a mixed ester of a diol esterified with (meth)acrylic acid and an organic or inorganic acid (such as phosphoric acid).
U.S. Patent No. 3,449,303 discloses polymers of phosphate esters derived from allyloxy and allyloxyalkoxy phosphates and having improved dyeability.
U.S. Patent No. 4,110,285 discloses a process for preparing a stable aqueous emulsion of addition polymers using a mixture of phosphate esters as an emulsionstabilizer during the polymerization process.
European patent publication no. 0221498 discloses anticorrosive copolymer emulsion prepared from ethylenically unsaturated monomers and a polymerizable surface-active alkylphosphate monomer.
U.S. Patent NO. 4,477,623 disclosed an improved paint composiRon comprising;
1) a water-insoluble addition polymer prepared from styrenes, acrylates, methacrylates, vinyl esters and vinyl chloride (including at least one monomer containing a phosphoric, sulphonic or carboxylic acid group 2)anionic or non-ionic emulsifier, 3) polyoxyethylene-chain-containing compound and 4) alkali-soluble addition polymer.
U.S. Patent No. 4,506,057 discloses a modified latex composition comprising at least one ethylenically unsaturated monomer and a compound having a - PO(O)2 group which is bound ~o the surface of the latex. These compositions may contain various water-insoluble inorganic fillers such as zinc oxide.
Japanese patent disclosure no. 61-143411 discloses an acrylic coating material consisting of a copolymer of 90-99.9 wt.% of copolymerizable monomer and 0.1-10 wt.% of phosphoric acid ester.
20()5G4~
U.S. Patent No. 4,~58,003 discloses polymeric compositions comprising the reaction product of 0.5-100% of a (hydroxyl)-phosphinyl-alkyl acrylate or methacrylate and 0-99.5% of a methacrylate and 0-99.5% of a polymerizable 1,2-ethylencially unsaturated compound.
The present invention is an improvement over the prior art compositions of carboxyl or phosphorus-containing polymers. The improvement lies in the combination of one or more polymer(s) containing phosphorus groups and a crosslinking agent comprising one or more water-soluble polyvalent metal compounds. It is an object of 0 this invention to provide coating and adhesive compositions which have improved solvent, chemical, print and corrosion resistance and adhesion to metal. It is a further object of this invention to provide improved phosphorus-containing polymer compositions which contain water-soluble polyvalent metal crosslinking agents instead of water-insoluble metal crosslinkers. It is an even further object of this invention to provide novel polymeric compositions which are curable at ambient temperatures.
Further, it is an object of the present invention to provide film-forming polymeric compositions which are stable as a one-container system without the necessity of pre-mixing of ingredients immediately prior to use.
Z0056~
, .
SUMMARY QF TI~E II~JVENTION
This invention relates to improved polymer compositions comprising in combination a) one or more polymer(s) containing pendant and/or terminal phosphorus groups(s) and b) one or more water-soluble polyvalent metal compounds(s) functioning as a crosslinking agent. The compositions may additionally contain a volatile chelating agent, such as, for example, volatile ammonia, amines, beta-ketoesters, bela-diketones and acetyl acetone. Preferred polyvalent metal compounds include the acetates benzoates, nitrates and carbonates of Co2+, Zn2+, Ni2+ and Zr2+. The compositions of the present invention are useful in a variety of coatings and adhesives applications and result in improved solvent resistance, chemical resistance, print resistance, corrosion resistance and adhesion to metal surfaces.
D~TAILED ~S~IPTION
The present invention involves novel polymeric compositions which find utility as ambient-curable coatings and adhesives haYing improved solvent resistance, chemical resistance, print resistance, corrosion resistance and adhesion to metal surfaces. This invention specifically relates to polymeric compositions comprising in combination a) one or more polymer(s) containing pendant or terminal (or both) phosphorus group(s) and b) one or more water-soluble polyvalent metal compound(s) functioning as a crosslinking agent.
The polymers which are useful in this invention include homopolymers and copolymers of: (1) vinyl esters of an aliphatic acid having 1 to 18 carbon atoms, such as vinyl acetate; (2) acrylic acid esters and methacrylic acid esters of an alcohol having 1 to 18 carbon atoms, such as for example methyl acrylate, ethyl acrylate, butylacrylate, 2-ethyl hexyl acrylate, methyl methacrylate, ethyl methacrylate and butyl methacrylate; and (3) mono-and di-ethylencially unsaturated hydrocarbons, such as ethylene, isobutylene, styrene, aliphatic dienes (such as butadiene, isoprene, and chloroprene) and the like. The polymers preferably include copolymers of acrylic or ~0~1~69L~
methacryiic acid esters with one or more of the following monomers: vinyl chloride, vinylidene chloride, styrene, vinyltoluene, acrylonitrile, an~ methacrylonitrile.
Suitable polymers also include copolymers of one or more of ~he above hydrocarbons with one or more nitriles or amides of acrylic acid, methacrylic acid or vinyl esters.
The polymers may be used as emulsions, suspensions, or solutions of the polymers in water or organic solvents, preferably as aqueous emulsions. The polymer par~icles can be single-stage or multi-stage. The present invention is especially suitable for use in acrylic latex type compositions such as described in U.S. Patent Nos. 4,129,448;4,102,843; 3,740,366, and 3,736,286, the disclosures of which are herein incorporated by reference. Preferably, the polymers for use in this invention are thermoplastic and have a glass transition temperature from about -50C to about 100C, more preferably 20-60C. A suitable concentration of total polymers present in the compositions of this invention ranges from about 30% to about 99% by weight based on the total dry weight of the composition. The concentration of polymers which contain no phosphorus groups can range from about 50% to about 98% by weight based on the total weight of polymers in the composition.
It is critical to the practice of this invention that at least one of the polymers contain pendant and/or terminal phosphorus groups. Suitable phosphorus-group-containing polymers would inciude the polymers mentioned above which have a molecular weight (measured by gel permeation chromatography) of about 400 or greater and at least two phosphorus groups per molecule. The phosphorus groups can be phosphale, phosphonate or phosphinate. Preferably the phosphorus-group-containing polymer is an acrylic polymer or copolymer having a molecular weight of about 500,000 or greater and from about 4 to about 5 phosphorus groups per molecule. The phosphorus-group-containing polymers can be prepared by reacting the basic polymer and/or corresponding polymerizable monomers with sultable monomers containing phosphate, phosphonate or phosphinate functionality following conventional polymerization processes such as disclosed in U.S. Patent No. 4,658,003, herein incorporated by reference.
~0~)56~10 Phosphorus-containing monomers and the preparation thereof are described in U.S. Patent No. 3,355,364, the disclosure of which is herein incorporated by reference.
The prelFerred monomers for preparing the phosphorus-group-containing polymer are phosphoethylmethacrylate, phospho-di(ethyl methacrylate), and allyl phosphate represented by the formula 1, ll and lll, respectively.
l l 11 H2C=C-C-O-C-C-O-P-OH (I) Il I I I
O H H OH
I I 11 (II) H2C=C-C-O-C-C-O-P-OH
Il I I
O H H
H H O
l l ll H2c=c-C-o-P-OH (III) l l H OH
' ;~)056~L(1 .
A suitable level of phosphorus-group-containing polymers for use in the compositions of this invention is from about 2% to about 50% by weight based on the total weight of polymer in the composition. Preferably the phosphorus groups have the formula.
-Z-P-OR1, where Rland R2 independently are H or (C1.C12) alkyl or aryl and Z is -0-or -~-. 5 It is also critical to the practice of this invention that the polymeric compositions contain one or more water-soluble polyvalent metal compounds functioning as crosslinking agents. Suitable polyvalent metals include those such as elements 21 through 30 of the Periodic Table of the ~lements. The preferred polyvalent metal compounds include the metal acetates, benzoates, nitrates, carbonates and the like, although any water-soluble polyvalent metal compound would be suitable for use in this invention. A suitable level of polyvalent metal for this invention ranges from about 1:4 to about 2:1 polyvalent metal to phosphorus-groups. Preferably the molecular ratio of polyvalent metal to phosphorus-groups ranges from about 1:2 to about 2:1.
The compositions of this invention may also include a volatile chelating agent which functions to block the polyvalent metal while in solution. This preYents premature crosslinking of the metal with the polymer-bound phosphorus-groups until the volatile chelating agent has evaporated. Thus, the invention produces coatings and adhesives compositions which exhibits long-term storage stability in a one container ;~0~3S6~(~
system, and which are curable at ambient temperature by air drying. Suitable, volatile chelating agents include, for example, ammonia; amines, such as morpholine, monoethanolamine, diethylamino ethanol, triethylamine and triethanol amine; B-diketones; and B-ketoesters. The ~-diketones are represented by the formula:
O O
Il 11 Y-C-CHR-C-Y', where R is -H, lower alkyl or aryl; and Y and Y' independently are aryl or -CXX~B where X and X' independently are -H or halogen and B is -H, halogen or lower alkyl. Suitable 13-diketones include, for example, 2,4-pentanedione, 2,4-hexanedione, 2,4-heptanedione, 5-methyl-2, 4-hexanedione, 5,5-dimethyl-2, 4-hexanedione, 3-methyl-2, 4-pentanedione, 1,1,1-trifluoro-2, 4-pentanedione, 3-benzyl, 2,4-pentanedione and the like. The B-ketoesters can be represented by the formula:
O O
Il 11 Y-C-CHR-C-O-Y', where Y, Y' and R are as defined above.
Suitable B-ketoesters include, for example, methyl acetoacetate, ethylacetoacetate, alpha-methyl-ethyl acetoacetate, alpha-n-butyl ethyl acetoacetate, alpha-secbutyl alpha-ethylethyl acetoacetate and the like. The volatile chelating agents are used at a level of at least 2 moles of chelating agent per mole of meta~, preferably at a molar excess of chelating agent to metal.
The compositions of this invention preferably contain a solvent which comprises from about 40% to about 80% by weight of the to~al composition. Suitable solvents include water and organic solvents such as alcohols, glycol ethers, aromatics, ketones, acetates. These include, for exarnple, methanol, ethanol, toluene, xylene, acetone, methyl ethyl ketone, butyl acetate and the like.
.
2~S~
Most preferably the compositions of this invention are aqueous emulsions.
The compositions optionally may include other traditional additives for coatingsand adhesives, such as thickeners, pigments, stabilizers and the like, provided tha~ these do not interfere with the crosslinking of the polyvalent metal with the phosphorus groups. The amount of these optional additives can be determined by methods known in the art, but are preferably less than 70% by weight of the total solids content of the compositions.
The compositions are prepared by blending the ingredients to obtain a homogeneous mixture. The polyvalent metal is preferably added as an aqueous solution with a pH of about 9-10. The phosphorus-group-containing polymer(s) can be cold blended into the compositions without the necessity of grafting these polymers onto the other polymers in the composition. It is believed that the cured composition forms an interpenetrating polymer network resulting from polyvalent metal and phosphorus group crosslinking and chain entanglement. The compositions can be applied to a substrate by a variety of techniques such as brushing, spraying, dipping or rolling.
They can be air-dried and cured at ambient temperatures from about 5C or higher to obtain films with dramatically improved performance properties. The compositions of this invention are useful in a variety of applications such as paints, coatin~s, adhesives, caulks and mastics.
The following examples are presented to demonstrate this invention. The examples are intended to be illustrative and not limitative. All parts and percentages are by weight unless otherwise indicated.
~MPLE I
A phosphorus-group-containing polymer within the scope of this invention was prepared by the following procedure:
A 3 liter, 4-necked, round-bottom flask with a blade stirrer, condenser, nitrogen inlet, thermometer and inlets for adding monomer emulsion and initiatorsolution was charged with 690g. deionized water and 3.39. soap (Siponate DS-4; 23%
active). This solution was heated to 80C under a flow of nitrogen.
' g 2~ 40 A monomer emulsion was prepared by adding 577.2g. butyl acrylate and 490.6g.
methyl methacrylate to a solution of 16.4g. soap (Siponate DS-4) in 603g. of deionized water. A portion (101g.) of the monomer emulsion was reserved to make a preform seed and 42.2g. of phosphoethyl methacrylate (Kayamer PM-1 available from Nippon Kayaku Co., Ltd.) was added to the remainder of the monomer emulsion.
The 101g. of reserved monomer emulsion above was added to the reaction flask, followed by a solution of 3.12g. ammonium persulfate dissolved in 239. deionized water.
The reaction mixture was allowed to polymerize for 5 minutes and the temperature was maintained at 80C . The remaining portion of the monomer emulsion and an initiator solution of 0.56g. ammonium persulfate in 60g. deionized water were added separately and uniformly over 180 minutes while maintaining a reaction temperature of 80C. At the conclusion of the feeds of monomer emulsion and initiator solution, the reaction was maintained at 80C for 30 minutes and then cooled to 55C. The reaction was finished-off by adding 11.1g. of an 0.15% aqueous solution of FeSO4-7H2O, 0.32g. t-butyl hydroperoxide in 19g. deionized water and 0.14g. sodium sulfoxylate formaldehyde in 19g. deionized water and maintaining temperature of 80C for 20 minutes. The final product was cooled and filtered through a 100 mesh screPn.
The resulting phosphorus-group-containing latex had a composition by weight of 52% butyl acrylate, 44.2% methyl methacrylate and 3.8% phosphoethyl methacrylate.
This latex had a total solids of 42.2%, viscosity of 16 centipoise and particle size of 155 nanometers.
E~mple ll A phosphorus-containing polymer within the scope of this invention was prepared by the following procedure:
A 3-liter, 4-necked, round-bottom flask with a stirrer, condenser, nitrogen inlet, thermometer and inlets for adding monomer emulsion and initiator/buffer solution was charged with 918g. deioni~ed water and 12.0g of soap (Alipal C0-436, 58% active).
This solution was heated to ~0C under a flow of nitrogen.
2~05640 A monomer emulsion was prepared by adding 516.49. of butyi acrylate, 473.19.
of methyl methacrylate, 26.49. of methacrylic acid and 40.19. of phosphoethyl methacrylate to a solution of 6.~g. of soap in 264g. of deionized water.
A portion (90.5g.) of the monomer emulsion was added to the reaction flask followed by a solution of 2.19. ammonium persulfate dissolved in 37.79. delonized water.
The reaction mix~ure was allowed to polymerize for about 20 to 30 minutes. Then the remaining portion of the monomer emulsion and an initiator/buffer solution of 0.759. of a~monium persulfate dissolved in 256g. of deionized water containing 6.8g. of ammonia (28%) were added separately and uniformly over 150 minutes while maintaining a reaction temperature of 80C. At the conclusion of the feed of the monomer emulsion and initiator/buffer solution the reaction was maintained at 80C for an addi~ional 3 minutes and then cooled to 70C.
The reaction was finished-off by adding 10.69. of an 0.15% aqueous solution of FeSO471~20, 1.5g. t-butyl hydroperoxide (70%) in 37.79. of deionized water and 1.06g. of sodium sulfoxylate formaldehyde in 37.79. of deionized water and maintaining a temperature of 70C for 30 minutes.
The final product was cooled and filtered through a 100 mesh screen. The resulting phosphorus-group-containing latex had a composition by weight of 48.9%
butyl acrylate, 44.8% methyl methacrylate, 2.5% methacrylic acid and 3.8%
phosphoethyl methacrylate. The latex had a total solids of 39.8%, viscosity of 18 centipoise and average particle size of 106 monomet~rs.
~a~1~ lll A phosphorus containing polymer within the scope of this invention was prepared following the procedures of Ex. Il, except that the monomers and amounts thereof were altered to give a polymer having the composition by weight of 47.8/~, butyl acrylate, 43.6% methyl methacrylate and 8.6% phosphoethyl methacrylate. The resulting latex had a total solids of 39.6%, viscosity of 32 centipoise and average particle size of 104 3 o nanometers.
, ~)56~() xample IV
A phosphorus-containing polymer within ~he scope of this invention was prepared by the foilowing procedure:
A 5-liter, 4-necked, round-bottom flask with a stirrer, condenser, nitrogen inlet, thermometer and inlets for adding monomer emulsion and initiator solution was charged with 16309. deionized water and 18.49. of soap.
A monomer emulsion was prepared by adding 710.5g. of 2-ethylhexyl acrylate, 463.9g. of styrene, 450g. of acrylonittile, 92.39. of methacrylic acid and 61.7g. of phosphoethyl methacrylate to a solution of 57.5g. of soap in 380g. of deionlzed water.
A portion (100g.) of the monomer emulsion was added to the reaction flask followed by a solution of 3.609. ammonium persulfate dissolved in 45g. deionized water.
The flow of nitrogen was stopped and the reaction mixture was allowed to polymerize for 20 minutes. A solution of 3.6g. of sodium carbonate dissolved in 45g. of deionized water was added to the flask. Then the remaining portion of the monomer emulsion and an intitiator solution of O.90g. of amrnonium persulfate dissolved in 120g. of deionized water containing 3.1g. of soap were added separately and uniformly over 180 minutes while maintaining a reaction temperature of 80C. At the conclusion of the feed of the monomer emulsion and initiator solution, the monomer emulsion was rinsed into the flask with 409. of deionized water and reaction was maintained at 80C for an additional 30 minutes and then cooled tG 70C.
The reaction was finished-off by adding 18.0g. of an 0.15% aqueous solution of FeSO47H20, 2.6g. t-butyl hydroperoxide (70%) ("t-BHP") in 15g. bf deionized water and 1.8g. of sodium sulfoxylate formaldehyde in 25g. of deionized water. After 15 minutes at about 70C, another charge of the t-BHP soiution and sodium sulfoxylate formaldehyde solution was added. After another 15 minutes, 21.~g. of styrene monomer was added to the kettle and a third charge of a t-BHP solution and sodium sulfoxylate formaldehyde solution was added. The reaction temperature was maintained at about 70C for another 15 minutes.
, ~os~
The reaction was then cooled to below 40C and neutralized with ammonia (28%).
The final product was cooled and filtered through a 100 mesh screen. The resulting polymer had a composition by weight of 39.47% ethylhexyl acrylate, 26.97% styrene, 25.0% acrylonitrile, 5.13% methacrylic acid and 3.43% phosphoethyl methacrylate.The resulting latex had a total solids of 41.7%, average particle size of 105 nanometers and viscosity of 1668 centipoise.
A phosphorus-containing polymer within the scope of this invention was prepared following the procedures of Ex. Il, except that the monomers and amounts thereof were altered to give a polymer having a composition by weight of 48.4% butyl acrylate, 4~.4% methyl methacrylate, 1.~% methacrylic acid and 5.7% phosphoethylmethacrylate. The resulting latex had a total solids of 40.0%, viscosity of 20 centipoise and average particle size of 113 nanometers.
~mple V! rcQmparative) An acrylic polymer containing no phosphorus groups was prepared following the procedures of Example ll. The monomers and amounts thereof were altered to give a polymer having a final composition by weight of 49.8% of butyl acrylate, 45.7% methyl methacrylate, and 4.5% methacrylic acid. The resulting latex had a total solids of 40.7%, viscosity of 26 centipoise and average particle size of 102 nanometers.
The phosphorus-~roup-containing polymer composition of Example lll was mixed with a zinc ammonium carbonate solution to give a mixture containing 0.67% zinc based on total weighl of the polymer compositions (1.9% Zn based on solid weight of polymer. This mixture was then evaluated for properties of film formation, storage stability, solv~nt and chemical resistance and print resistance. Film formation was tested by casting said composition on Bonderite~ 1000 steel panels to give a dry film thickness of about 1.2 mils.
~o~s~
The panels were dried at 150F for 30 minutes and allowed to stand at room temparature for 7 days. The films were visually examined for continuous film formation and appearance.
Solvent resistance was measured following standard ASTM test method and using dimethylformamide solvent. Poor solvent resistance is indicated by a sample which dissolves or has a relatively high swell ratio. Print and block resistance were measured using standard test ptocedures and rated on a scale of 0 to 5, with 0=good and 5=poor.
Methy ethyl ketone solvent rub resistance was measured following standard test procedures and rated according to the number of rubs before the polymer film is visibly affected by the solvent.
Chemical salt resistance was measured by subjecting the panels to a salt spray for 72 hours. The films were visually examined and rated (10=good, 0-poor).
Storage stability was measured by allowing samples of the zinc-containing polymeric mixture to stand at 140F for 10 days. The sample were then physicallyexamined and measured for viscosity. The samples were rated as FAIL if there were any gel formation and greater than ten-fold increase in viscosity.
Example VIU (comparative) The polymer composition prepared in Ex. I was tested for film formation, storagestability, solvent and chemical resistance and print resistance following the procedures of Ex. Vll, except that no zinc ammonium carbonate was added to the composition. The results of these tests are presented in Table I (infra).
~
The polymer composition prepared in Ex. Vl was tested as in Ex. Vll, except thatno zinc ammonium carbonate was added to the composition. The results are presented in Table I (infra).
,~
, ' , , .
~s~o :
TABLE I
Sampl~: Ex.VII _ Ex. Vlll Ex.lX
(comparative) (comparative) Test:
Film Formation yes yes yes Stability pass pass pass Solvent Resistance (swell ra~io) 3.9 dissolveddissolved Solvent Resistance ~200 30 15 (MEK rubs) Print Resistance 2 4 5 Block Resistance 1 5 5 Salt spray 9.5 4.5 3 The above results demonstrate that the composition of this invention(Ex. Vll) has improved solvent resistance, print resistance, block resistance and chemical resistance while maintaining good film formation and storage stability.
;
2005~
E~ample X
The polymer composition prepared in Ex. I was mixed with insoluble, solid zinc oxide pigment at a weight ratio of polymer composition to zinc oxide of 60:40. The mixture was evaluated for film formation following the procedure of Ex. Vll. No film formed from the mixture and only a dry powder resulted. The composition was alsotested for storage stability and rated as FAIL because complete gelation occurred.
Example Xl The polymer composition prepared in Ex. Vl was mixed with a zinc ammonium carbonate solution to give a mixture containing 0.67% zinc (1.9% Zn based on solid wt.
of polymer). The composition was tested for storage stability as in Ex. Vll and was rated as FAIL. The composition was also tested for solvent resistance as in Ex. Vll and completely dissolved in dimethylformamide.
Example ~11 The polymer composition prepared in Ex. V was mixed respectively with a variety of water-soluble, polyvalent metal solutions to form compositions within the scope of this invention. A control sample was also prepared containing none of the metal solutions. The samples were formulated according to the fol!owing recipe:
Sample: (~rams~ _ A _ ~ C D(controll Ingredients:
Polymer composition (40% solids) 62.5 62.5 62.5 62.5 Zn CO3~4NH3 (8.2% Zn) 5.82 ZrCO3~4NH3 (17%Zr) - 3.91 NiC:O3 (81.2% solids) - - i.07 NH40H (14%) 1.5 2.5 3.9 2.5 bu~ylcarbitol~ 5.0 5.0 5.0 5.0 Thickener 2.5 1.0 1.0 1.0 ~diethylene glycol monobutyl eIher 2~C~56~
These samples were tested for solvent resistance as in Ex. Vll. The results are presenteci below:
Sample: _ A B C D
MEK rubs ~200 >200 >20015 Sweli Ratio:
~tetrahydrofuran) 5 . 4 4 .14.9 gelled (dimethyl formamide) 4.5 2.7 4.1 dissolved
Claims (11)
1. A polymer composition comprising in combination a) one or more polymer(s) containing pendant and/or terminal phosphorus group(s) and b) one or more water-soluble polyvalent metal compound(s) functioning as a crosslinking agent.
2. A composition of claim 1 wherein said polymer a) comprises about 2% to about 50% by weight based on the total weight of polymer in said composition.
3. A composition of claim 1 wherein the molecular ratio of said polyvalent metal to said phosphorus group(s) ranges from about 1:4 to about 2:1.
4. A composition of claim 1 wherein said phosphorus group(s) have the formula:
where R1 and R2 independently are H or (C1 C1 2) alkyl or aryl and Z is -O-or -C-.
where R1 and R2 independently are H or (C1 C1 2) alkyl or aryl and Z is -O-or -C-.
5. A composition of claim 1 wherein said polyvalent metal is selected from the group consisting of Co2+, Zn2+, Ni2+ and Zr2+.
6. A composition of claim 5 wherein said polyvalent metal compound is selected from the group consisting of acetates, benzoates, nitrates, and carbonates
7. A composition of claim 1 wherein said polymer composition is an aqueous emulsion.
8. A composition of claim 1 wherein said polymer a) is polymerized from acrylate or methacrylate monomers.
9. A composition of claim 8 wherein said monomers contain phosphoethyl methacrylate.
10. A composition of claims 8 wherein said monomers contain allyl phosphate.
11. A composition of claim 1 additionally containing a volatile chelating agent.12. A composition of claim 11 wherein said volatile chelating agent is selected from the group consisting of volatile ammonia, amines, beta-ketoesters beta-diketones, and acetyl acetone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29181688A | 1988-12-29 | 1988-12-29 | |
| US291,816 | 1988-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2005640A1 true CA2005640A1 (en) | 1990-06-29 |
Family
ID=23121968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002005640A Abandoned CA2005640A1 (en) | 1988-12-29 | 1989-12-15 | Improved phosphorus-containing polymer compositions containing water - soluble polyvalent metal compounds |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0376591B1 (en) |
| JP (1) | JP3007105B2 (en) |
| AT (1) | ATE125825T1 (en) |
| AU (1) | AU626959B2 (en) |
| BR (1) | BR8906853A (en) |
| CA (1) | CA2005640A1 (en) |
| DE (1) | DE68923691T2 (en) |
| DK (1) | DK670789A (en) |
| FI (1) | FI896319A0 (en) |
| HK (1) | HK172395A (en) |
| MX (1) | MX172630B (en) |
| NO (1) | NO895205L (en) |
| NZ (1) | NZ231890A (en) |
| ZA (1) | ZA899768B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111886312A (en) * | 2017-09-12 | 2020-11-03 | Ddp特种电子材料美国公司 | Adhesive formulations |
| US20210253868A1 (en) * | 2015-12-02 | 2021-08-19 | Arkema Inc. | Emulsion polymers and low voc coating compositions made therefrom |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1003944A3 (en) * | 1990-10-02 | 1992-07-22 | Interox Sa | Organophosphonic POLYMERS AND THEIR USE AS STABILIZERS AQUEOUS SOLUTIONS OF HYDROGEN PEROXIDE. |
| US5922410A (en) * | 1995-01-18 | 1999-07-13 | Rohm And Haas Company | Wood coating composition |
| US6458874B1 (en) * | 2000-06-22 | 2002-10-01 | Basf Corporation | Coating compositions having improved direct to metal adhesion |
| US6599965B2 (en) * | 2000-06-22 | 2003-07-29 | Basf Corporation | Coating composition for metallic substrates |
| US6756459B2 (en) * | 2000-09-28 | 2004-06-29 | Rohm And Haas Company | Binder compositions for direct-to-metal coatings |
| EP1302515B1 (en) | 2001-10-01 | 2008-08-06 | Rohm And Haas Company | Coating composition based on a bimodal emulsion copolymer, methods of blocking stains, improving hiding, improving block resistance and improving shear stability |
| US7179531B2 (en) * | 2002-09-12 | 2007-02-20 | Rohm And Haas Company | Polymer particles having select pendant groups and composition prepared therefrom |
| EP1668076B1 (en) * | 2003-09-23 | 2013-05-01 | Solvay Sa | Vinylidene chloride polymer composition |
| US9238747B2 (en) | 2008-11-17 | 2016-01-19 | Basf Se | Stain blocking compositions |
| JP6713339B2 (en) * | 2016-04-25 | 2020-06-24 | 株式会社クラレ | Aqueous emulsion composition, adhesive using the same, method for producing aqueous emulsion, and method for producing aqueous emulsion composition |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4264363A (en) * | 1979-07-05 | 1981-04-28 | The Lubrizol Corporation | Corrosion inhibiting coating composition |
| JPS6044343B2 (en) * | 1980-02-29 | 1985-10-03 | 三井東圧化学株式会社 | curable composition |
| US4467071A (en) * | 1982-09-13 | 1984-08-21 | Lord Corporation | Epoxy modified structural adhesives having improved heat resistance |
| JPS59122410A (en) * | 1982-12-28 | 1984-07-14 | Tokuyama Soda Co Ltd | Dental cement composition |
| JPS59122411A (en) * | 1982-12-29 | 1984-07-14 | Tokuyama Soda Co Ltd | Dental cement composition |
| JP2720488B2 (en) * | 1988-12-16 | 1998-03-04 | 三菱樹脂株式会社 | Method for producing acrylic adhesive |
-
1989
- 1989-12-15 CA CA002005640A patent/CA2005640A1/en not_active Abandoned
- 1989-12-19 MX MX018768A patent/MX172630B/en unknown
- 1989-12-19 EP EP89313293A patent/EP0376591B1/en not_active Expired - Lifetime
- 1989-12-19 AT AT89313293T patent/ATE125825T1/en not_active IP Right Cessation
- 1989-12-19 DE DE68923691T patent/DE68923691T2/en not_active Expired - Fee Related
- 1989-12-20 NZ NZ231890A patent/NZ231890A/en unknown
- 1989-12-20 ZA ZA899768A patent/ZA899768B/en unknown
- 1989-12-21 JP JP1332515A patent/JP3007105B2/en not_active Expired - Fee Related
- 1989-12-22 AU AU47063/89A patent/AU626959B2/en not_active Ceased
- 1989-12-22 NO NO89895205A patent/NO895205L/en unknown
- 1989-12-28 FI FI896319A patent/FI896319A0/en not_active IP Right Cessation
- 1989-12-28 DK DK670789A patent/DK670789A/en not_active Application Discontinuation
- 1989-12-29 BR BR898906853A patent/BR8906853A/en not_active IP Right Cessation
-
1995
- 1995-11-09 HK HK172395A patent/HK172395A/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210253868A1 (en) * | 2015-12-02 | 2021-08-19 | Arkema Inc. | Emulsion polymers and low voc coating compositions made therefrom |
| US11680122B2 (en) * | 2015-12-02 | 2023-06-20 | Arkema Inc. | Emulsion polymers and low VOC coating compositions made therefrom |
| CN111886312A (en) * | 2017-09-12 | 2020-11-03 | Ddp特种电子材料美国公司 | Adhesive formulations |
Also Published As
| Publication number | Publication date |
|---|---|
| MX172630B (en) | 1994-01-04 |
| NO895205L (en) | 1990-07-02 |
| JP3007105B2 (en) | 2000-02-07 |
| EP0376591B1 (en) | 1995-08-02 |
| FI896319A0 (en) | 1989-12-28 |
| ATE125825T1 (en) | 1995-08-15 |
| EP0376591A1 (en) | 1990-07-04 |
| HK172395A (en) | 1995-11-17 |
| NZ231890A (en) | 1992-03-26 |
| DK670789A (en) | 1990-06-30 |
| AU626959B2 (en) | 1992-08-13 |
| AU4706389A (en) | 1990-07-05 |
| DK670789D0 (en) | 1989-12-28 |
| DE68923691D1 (en) | 1995-09-07 |
| ZA899768B (en) | 1990-08-29 |
| DE68923691T2 (en) | 1996-02-08 |
| JPH02238069A (en) | 1990-09-20 |
| NO895205D0 (en) | 1989-12-22 |
| BR8906853A (en) | 1990-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |